Among all abiotic stresses, drought is considered as one of the devastating factors limiting agricultural productivity worldwide which is likely to increase in the near future owing to continuous climate change. Drought affects the plant growth through a number of mechanisms including morphological changes, hormonal and nutritional imbalance and generation of free radicals. Under such conditions it is imperative to formulate strategies that can improve the crop production. In this regard concentrating the soil microbes in the rhizosphere has been found to have positive effect on the plant growth and chances of plant survival under drought conditions. Millions of microbes inhabit plant root system forming a complex ecological community that influences plant growth and productivity through its metabolic activities and plant interactions [1]. It has been reported that these beneficial microorganisms colonize the plant rhizosphere and impart drought tolerance by the following mechanisms.